10. The expert from CLEPA introduced GRB-54-09 proposing the inclusion of the additional sound emission provisions (ASEP) also into Regulation No. 59. The proposal received comments from GRB experts, such as the deletion of the proposed tolerance of 4 dB(A), unless technical rationales are provided for justification. GRB agreed to resume discussion at its February 2012 session on the basis of a revised proposal tabled by the expert from CLEPA.

12. The expert from CLEPA introduced a proposal (GRB-57-27) for amendments to the UN Regulation aimed at introducing ASEP provisions. GRB agreed to defer discussion on this subject to its September 2013 session and requested the secretariat to distribute GRB-57-27 with an official symbol at that session.